West Dean mastic sealing
Mastic sealing for building owners, managing agents and housing associations throughout West Dean and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Draughts at frames across a block
- Brittle perimeter mastic across a building
- The same joint failures repeated across a portfolio
Mastic sealing for West Dean sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Mastic sealing in West Dean
Managing agents and housing associations typically need paperwork before anyone starts. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. Site teams most often ask us about worn sealant at communal door frames and a mix of products and colours from past repairs, across shopfronts below residential blocks, balcony and threshold joints and communal entrances and stairwells. Whether you call it commercial sealant work, mastic application or joint sealing, in West Dean it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Rural conversions near places like West Dean often set modern frames into older stone, flint or brick. Perimeter mastic there has to grip an uneven face and suit the building’s character.
We sign every job off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.
- Where
- West Dean (PO18)
- Wider area
- West Sussex
- Cover
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
When it isn’t the sealant
Not every problem is a sealant problem, and we’re upfront when that’s the case. It won’t fix:
- Broken glass or failed sealed units
- Failed window or door frames, which need a window contractor
- Substrate edges that need repairing first
If in doubt, phone 01277 525 020 or use the quote form and we’ll say what we think before you book.
Surfaces we seal
- Balcony and threshold joints
- External wall and movement joints
- Window and door perimeters on blocks
- Communal entrances and stairwells
- Shopfronts below residential blocks
- Communal kitchens and washrooms
What happens if it’s left?
Resealing ahead of leaks keeps it to a maintenance task. Once water has tracked in, the repair list grows and occupiers notice. Around West Dean, it’s better to renew all the failing joints at once, rather than one at a time. Photos of every joint help us quote for the whole job.
We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote.
Why choose Mastic Doctor in West Dean
- Constructionline member for supplier checks
- Old sealant cut out, never sealed over
- Clear, fixed quotes
- Commercial sealant work since 2005
See how commercial sealant jobs are priced or our accreditations and insurance.
Block-wide mastic in West Dean
West Dean sits in one of the drier corners of the country, the South East. Outside mastic still needs a dry joint and the right temperature, while the elevations that take the most sun tend to show hardened mastic first. West Dean is about 51 miles from central London. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres; their frame mastic often ages block-wide.
For a school such as West Dean CofE Primary School, perimeter mastic on windows and doors is a holiday job. If you look after a block within reach of Fishbourne station, 4.8 miles to the south of West Dean, frame and balcony mastic can be renewed on one programme. Student blocks close to universities like University of Chichester (to the south of West Dean) are easiest to work on between tenancies.
West Dean is about 4 miles north of Chichester, in West Sussex. Looking for mastic sealing in West Dean? We can help. We work across 373 places in West Sussex, from busy centres to rural villages. Sites around Portsmouth have their own page, about 15 miles away.
Business premises anywhere in PO18 are within our area. We also cover Singleton (1 mile east), Charlton (2 miles east), East Dean (3 miles east), Cocking (3 miles north) and Bepton (4 miles north) for mastic joints. Bigger towns within reach include Bognor Regis (9 miles south-east), Chichester (4 miles south), Selsey (12 miles south), Littlehampton (13 miles south-east), Rustington (13 miles south-east) and Storrington (14 miles east).
Landmarks near West Dean
West Dean’s nearest station is Fishbourne station, roughly 4.8 miles south of the centre. Other landmarks nearby include Chichester Castle (4.5 miles south) and Museum of Gardening (less than half a mile north-east). Open spaces near West Dean include Levin Down and Kingley Vale National Nature Reserve.
Quoting for work in West Dean
We price every job individually. The things that drive the figure:
- How much existing material needs removing
- Site requirements such as inductions and permits
- Access and working height
- Which sealant the job calls for
The specified product makes a difference, as does the preparation each joint needs. Access, phasing and site requirements come into it too.
Sending details for a quote
A good diagnosis starts with the right details. Let us know:
- The asbestos register, for older buildings
- Photos of the joints, close up and from further back
- Anything awkward about access or site hours
- The postcode of the building
A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or call 01277 525 020 or send photos by email if you’d rather talk the job through.
Site staff or a sealant specialist?
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.
From enquiry to sign-off
When we get to site, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, and the work normally takes a few days for most blocks, with larger programmes scheduled building by building. Rural sites near West Dean may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.
- A building-by-building inspection lists the failed joints.
- The quote is fixed and split as suits you.
- Dates and areas are agreed so occupiers can be told.
- Failed sealant is removed and the faces prepared.
- Joints are resealed and tooled.
- We check the finished work and confirm the guarantee.
Preparing the site
- Let building users know which areas are affected
- Make sure the joints can be reached
- Tell us your opening times and when work is allowed
Getting a fixed quote
Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. For smaller jobs, photos and a description will do.
Related advice
Looking after the joints
To get the most from the new sealant:
- Make mastic part of routine maintenance checks
- Track which buildings were done and when
- Share your contractor requirements early
- Reduce knocks to communal area joints
Where a paintable product was specified, it can be painted after curing. Non-paintable silicone shouldn’t be painted over.
One failed perimeter normally means others on the same building are close, so it pays to look at the whole elevation. Doing them together saves going back again and again.
West Dean: questions and answers
Is West Dean too small for you to travel to?
No. Places such as West Dean are covered as much as the big towns. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.
Do you take on block-wide or estate-wide mastic work in West Dean?
Yes. Portfolio-wide programmes are a regular request. Send the addresses and photographs and we will give a fixed quote.
Who decides which product is used?
A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
Is it fine to apply new sealant on top of old?
No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
How long does a job like this take?
The duration is planned around your programme and the access we’re given. We will give you an estimate of time on site when we quote.
Will residents or tenants be disturbed?
Residents and tenants carry on as normal. We flag any areas that need internal access well before the dates so it can be arranged.
Is mastic sealing guaranteed?
A 12-month guarantee covers our work. It applies to our workmanship rather than damage or problems with the frames.